nr_rabbits, flood_left, flood_right = 2, 2, 4
def rabbit_islands(state):
if not state.size:
ipv = [([nr_rabbits, 0], 1)]
return ipv
nr_left, nr_right = state
reachable = []
if state[0] > 0:
reachable.append(([nr_left-1, nr_right+1], 1))
reachable.append(([0, nr_right ], flood_left))
if state[1] > 0:
reachable.append(([nr_left+1, nr_right-1], 1))
reachable.append(([nr_left, 0 ], flood_right))
return reachableState space
The state-space is built as a graph using an simple API and take up very little space compared to a matrix representation. It handles millions of vertices (states) and edges (transitions) and is munch faster than the traditional matrix-based computation relying on (sparse) matrix inversion and exponentiation.
Consider this model: Rabbits jump between two islands at a rate of one. The two islands are flooded at rates 2 and 4 drowning all rabbits on the flooded island. The end (absorbing) is when no more rabbits are left.
In ptdalgorithms, each state is represented by a sequence of integers. To represent states in the rabbit model, we only need two such integer to represent the number of rabbits on the left and right islands. Laid out as in the above picture, the states are:
[2, 0] [0, 1]
[1, 1] [0, 0]
[0, 2] [1, 0]
To skip some of the boilerplate you can pass a callback function and an initial state to Graph. The callback function must take as the only argument a list of int representing a state, and return: a list of tuples that each represent reachable child state and the associated transition rate. To create a callback function, just think of rules of your model and ask yourself:
Given some specific state, what are the allowed transitions to other states and at what rates to these transititons occur?
Here is an example for our rabbit model: If the current state is “two rabbits on the left island” ([2, 0]), the reachable states are: “one rabbit on each island” ([1, 1]) if one rabbit jumps and and “no rabbits” ([0, 0]) if the island is flodded. So if the callback function is called like this:
rabbit_model([2, 0])it should return
[([1, 1], 1), ([0, 0], 2)]Together, the callback and initial state fully specifies the model. Here is what they look like for the rabbit model:
To then build the state space all you need to do is:
import ptdalgorithms as ptd
graph = ptd.Graph(callback=rabbit_islands)Plot it to make sure it looks as expected. The gray S state is the “starting state” immediately transiting one or more model states where the model is allowed to begin. In the rabbit model, S goes to state 2,0 with probability 1 because the model can only begin there. The end (absorbing) state 0,0 is also colored gray.
graph.plot()--------------------------------------------------------------------------- RecursionError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: RecursionError: maximum recursion depth exceeded During handling of the above exception, another exception occurred: RecursionError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) RecursionError: maximum recursion depth exceeded while calling a Python object During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs) 48 try: ---> 49 _plot_graph(*args, **kwargs) 50 except Exception as e: File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) [... skipping hidden 1 frame] Cell In[19], line 1 ----> 1 graph.plot() File ~/PtDAlgorithms/src/ptdalgorithms/__init__.py:92, in Graph.plot(self, *args, **kwargs) 84 """ 85 Plots the graph using graphviz. See plot::plot_graph.py for more details. 86 (...) 90 _description_ 91 """ ---> 92 return plot._plot_graph(self, *args, **kwargs) File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs) 50 except Exception as e: ---> 51 subprocess.check_call(['dot', '-c']) # register layout engine 52 _plot_graph(*args, **kwargs) AttributeError: module 'asyncio.subprocess' has no attribute 'check_call' During handling of the above exception, another exception occurred: RecursionError Traceback (most recent call last) File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:3639, in InteractiveShell.run_ast_nodes(self, nodelist, cell_name, interactivity, compiler, result) 3638 asy = compare(code) -> 3639 if await self.run_code(code, result, async_=asy): 3640 return True [... skipping hidden 1 frame] File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:2182, in InteractiveShell.showtraceback(self, exc_tuple, filename, tb_offset, exception_only, running_compiled_code) 2178 return isinstance( 2179 val, BaseExceptionGroup 2180 ) or contains_exceptiongroup(val.__context__) -> 2182 if contains_exceptiongroup(value): 2183 # fall back to native exception formatting until ultratb 2184 # supports exception groups 2185 traceback.print_exc() File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:2180, in InteractiveShell.showtraceback.<locals>.contains_exceptiongroup(val) 2177 return False 2178 return isinstance( 2179 val, BaseExceptionGroup -> 2180 ) or contains_exceptiongroup(val.__context__) File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:2180, in InteractiveShell.showtraceback.<locals>.contains_exceptiongroup(val) 2177 return False 2178 return isinstance( 2179 val, BaseExceptionGroup -> 2180 ) or contains_exceptiongroup(val.__context__) [... skipping similar frames: InteractiveShell.showtraceback.<locals>.contains_exceptiongroup at line 2180 (2970 times)] File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:2180, in InteractiveShell.showtraceback.<locals>.contains_exceptiongroup(val) 2177 return False 2178 return isinstance( 2179 val, BaseExceptionGroup -> 2180 ) or contains_exceptiongroup(val.__context__) RecursionError: maximum recursion depth exceeded During handling of the above exception, another exception occurred: RecursionError Traceback (most recent call last) File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/async_helpers.py:128, in _pseudo_sync_runner(coro) 120 """ 121 A runner that does not really allow async execution, and just advance the coroutine. 122 (...) 125 Credit to Nathaniel Smith 126 """ 127 try: --> 128 coro.send(None) 129 except StopIteration as exc: 130 return exc.value File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:3394, in InteractiveShell.run_cell_async(self, raw_cell, store_history, silent, shell_futures, transformed_cell, preprocessing_exc_tuple, cell_id) 3390 # Execute the user code 3391 interactivity = "none" if silent else self.ast_node_interactivity -> 3394 has_raised = await self.run_ast_nodes(code_ast.body, cell_name, 3395 interactivity=interactivity, compiler=compiler, result=result) 3397 self.last_execution_succeeded = not has_raised 3398 self.last_execution_result = result File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:3658, in InteractiveShell.run_ast_nodes(self, nodelist, cell_name, interactivity, compiler, result) 3656 if result: 3657 result.error_before_exec = sys.exc_info()[1] -> 3658 self.showtraceback() 3659 return True 3661 return False File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:2182, in InteractiveShell.showtraceback(self, exc_tuple, filename, tb_offset, exception_only, running_compiled_code) 2177 return False 2178 return isinstance( 2179 val, BaseExceptionGroup 2180 ) or contains_exceptiongroup(val.__context__) -> 2182 if contains_exceptiongroup(value): 2183 # fall back to native exception formatting until ultratb 2184 # supports exception groups 2185 traceback.print_exc() 2186 else: File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:2180, in InteractiveShell.showtraceback.<locals>.contains_exceptiongroup(val) 2176 if val is None: 2177 return False 2178 return isinstance( 2179 val, BaseExceptionGroup -> 2180 ) or contains_exceptiongroup(val.__context__) File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:2180, in InteractiveShell.showtraceback.<locals>.contains_exceptiongroup(val) 2176 if val is None: 2177 return False 2178 return isinstance( 2179 val, BaseExceptionGroup -> 2180 ) or contains_exceptiongroup(val.__context__) [... skipping similar frames: InteractiveShell.showtraceback.<locals>.contains_exceptiongroup at line 2180 (2971 times)] File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:2180, in InteractiveShell.showtraceback.<locals>.contains_exceptiongroup(val) 2176 if val is None: 2177 return False 2178 return isinstance( 2179 val, BaseExceptionGroup -> 2180 ) or contains_exceptiongroup(val.__context__) RecursionError: maximum recursion depth exceeded
Off to the races
Now the world is at your command. To scratch the surfance you can compute the expected time to rabbit extinction:
graph.expectation()0.5038265306122448
but there is so much more you can do to explore your rabbit model. For a full exposé of the API using the rabbit example see the full python API example.
Learning more
- See Python API walk through for a full example of the Python API.
- See R API walk through for a full example of the R API.
Citing ptdalgorithms
Graph-based algorithms for phase-type distributions, Statistics and Computing (2022)

